西南交通大学学报2011，Vol.46Issue(5)：752-757,6.DOI:10.3969/j.issn.0258-2724.2011.05.007
双角钢十字组合截面构件铰支心受压承载力研究
Bearing Capacity of Pinned-End Built-up Cruciform Section Members Formed by Two Equal-Leg Angles under Compression Load
摘要
Abstract
To verify the applicability of high-strength steel to lattice-steel towers, an experiment covering 21 Q420 specimens, involving 3 different sectional dimensions (2L160 x 12, 2LI60 x 14, and 2L160 x 16) and 7 kinds of slenderness ratios ranging from 25 to 55, was run to test the bearing capacity of pinned-end cruciform section members. The test results were compared with the designed ones, showing that the existing design values of strength are 9. 16% higher than the test results in average; the failure mode of the thin-walled open cross section member is a mixture of flexural buckling and local instability; and torsional buckling is not the main failure mode for this kind of member, which is different with the available design concepts.关键词
高强钢/双角钢十字组合截面/修正公式/钢架塔Key words
high-strength steel/ built-up cruciform section formed by two equal-leg angles/ modified formula/ lattice-steel tower分类
建筑与水利引用本文复制引用
杨隆宇,李正良..双角钢十字组合截面构件铰支心受压承载力研究[J].西南交通大学学报,2011,46(5):752-757,6.基金项目
中央高校基本科研业务费科研专项研究生科技创新基金资助项目(CDJXS10200001) （CDJXS10200001）
